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EP3788337A4 - Non-contact methods of rail assessment for a railroad track - Google Patents

Non-contact methods of rail assessment for a railroad track Download PDF

Info

Publication number
EP3788337A4
EP3788337A4 EP19796009.9A EP19796009A EP3788337A4 EP 3788337 A4 EP3788337 A4 EP 3788337A4 EP 19796009 A EP19796009 A EP 19796009A EP 3788337 A4 EP3788337 A4 EP 3788337A4
Authority
EP
European Patent Office
Prior art keywords
assessment
rail
railroad track
contact methods
methods
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19796009.9A
Other languages
German (de)
French (fr)
Other versions
EP3788337A1 (en
Inventor
Dimitris Rizos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of South Carolina
Original Assignee
University of South Carolina
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of South Carolina filed Critical University of South Carolina
Publication of EP3788337A1 publication Critical patent/EP3788337A1/en
Publication of EP3788337A4 publication Critical patent/EP3788337A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/045—Rail wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Length Measuring Devices By Optical Means (AREA)
EP19796009.9A 2018-04-30 2019-04-08 Non-contact methods of rail assessment for a railroad track Withdrawn EP3788337A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862664520P 2018-04-30 2018-04-30
PCT/US2019/026267 WO2019212693A1 (en) 2018-04-30 2019-04-08 Non-contact methods of rail assessment for a railroad track

Publications (2)

Publication Number Publication Date
EP3788337A1 EP3788337A1 (en) 2021-03-10
EP3788337A4 true EP3788337A4 (en) 2022-01-19

Family

ID=68386775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19796009.9A Withdrawn EP3788337A4 (en) 2018-04-30 2019-04-08 Non-contact methods of rail assessment for a railroad track

Country Status (3)

Country Link
US (1) US11994436B2 (en)
EP (1) EP3788337A4 (en)
WO (1) WO2019212693A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10349491B2 (en) 2015-01-19 2019-07-09 Tetra Tech, Inc. Light emission power control apparatus and method
CA2892885C (en) 2015-02-20 2020-07-28 Tetra Tech, Inc. 3d track assessment system and method
US10807623B2 (en) 2018-06-01 2020-10-20 Tetra Tech, Inc. Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track
US10730538B2 (en) 2018-06-01 2020-08-04 Tetra Tech, Inc. Apparatus and method for calculating plate cut and rail seat abrasion based on measurements only of rail head elevation and crosstie surface elevation
US11377130B2 (en) 2018-06-01 2022-07-05 Tetra Tech, Inc. Autonomous track assessment system
CA3130193A1 (en) 2019-05-16 2020-11-19 Tetra Tech, Inc. Autonomous track assessment system
CN111368419B (en) * 2020-03-02 2022-05-20 中南大学 Method for judging constraint coupling effect range of high-speed railway track
FR3124590B1 (en) * 2021-06-23 2024-01-26 Centre Nat Rech Scient Process for characterizing a mechanical part

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090129674A (en) * 2008-06-13 2009-12-17 명관 이 System and method to monitor a rail
US20120245908A1 (en) * 2009-12-07 2012-09-27 Eber Dynamics Ab Method for determining the stress free temperature of the rail and/or the track resistance
EP3168585A1 (en) * 2015-11-16 2017-05-17 General Electric Company Methods for monitoring components

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5161891A (en) 1991-02-12 1992-11-10 Practical Transportation, Inc. Process for determining and controlling railroad rail's neutral temperature to prevent track buckling and rail fractures
HU219436B (en) 1995-05-09 2001-04-28 Magyar Államvasutak Rt. Method and apparatus for determining neutral temperature of rail without gap
US8934007B2 (en) * 2011-03-24 2015-01-13 Georgetown Rail Equipment Company Rail stress detection system and method
US9689760B2 (en) * 2011-11-10 2017-06-27 The Regents Of The University Of California Stress detection in rail
US9222904B2 (en) * 2012-08-13 2015-12-29 Harold Harrison Method and apparatus for detecting track failure
US9628762B2 (en) * 2012-11-04 2017-04-18 Board Of Regents Of The University Of Nebraska System for imaging and measuring rail deflection
US9989498B2 (en) * 2013-02-06 2018-06-05 The Regents Of The University Of California Nonlinear ultrasonic testing for non-destructive measurement of longitudinal thermal stresses in solids
US9556565B2 (en) 2013-04-15 2017-01-31 Keith A. Langenbeck Train rail track structure systems
US9752993B1 (en) * 2016-09-14 2017-09-05 The Boeing Company Nondestructive evaluation of railroad rails, wheels, and axles
US10311551B2 (en) * 2016-12-13 2019-06-04 Westinghouse Air Brake Technologies Corporation Machine vision based track-occupancy and movement validation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090129674A (en) * 2008-06-13 2009-12-17 명관 이 System and method to monitor a rail
US20120245908A1 (en) * 2009-12-07 2012-09-27 Eber Dynamics Ab Method for determining the stress free temperature of the rail and/or the track resistance
EP3168585A1 (en) * 2015-11-16 2017-05-17 General Electric Company Methods for monitoring components

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MEHMET SEFA ORAK ET AL: "Non-Contact Smartphone-Based Monitoring of Thermally Stressed Structures", SENSORS, vol. 18, 1 January 2018 (2018-01-01), pages 1 - 15, XP055649288, DOI: 10.3390/s18041250 *
See also references of WO2019212693A1 *

Also Published As

Publication number Publication date
WO2019212693A1 (en) 2019-11-07
US11994436B2 (en) 2024-05-28
EP3788337A1 (en) 2021-03-10
US20210131888A1 (en) 2021-05-06

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